A kind of lifting and rotating marine fish breeding cage and its use method

Abstract

The present invention discloses a marine fish farming cage that can be lifted and rotated and a method for using the cage, comprising a structural float, a farming cage body, a lifting mechanism and a rotating mechanism; the structural float floats on the water surface, a hanger is provided on the structural float, the lifting mechanism is provided on the hanger, the lifting mechanism is connected to the farming cage body, the farming cage body is lifted / lowered relative to the structural float through the lifting mechanism; the surface of the farming cage body is covered with a fishing net; the rotating mechanism is provided on the structural float and connected to the farming cage body, so that the farming cage body is in a descending state to realize the rotation of the farming cage body to dry the net. The present invention enables the cage to have lifting and rotating functions, reduces the cage draft, solves the problems of cage towing, docking maintenance and adult fish capture, solves the problems of frequent replacement of fishing nets due to marine organism attachment, and facilitates the inspection of damaged fishing nets.

Description

Technical Field

[0001] The invention relates to marine aquaculture equipment, and more particularly to a marine fish aquaculture cage which can be lifted and rotated and a use method thereof. Background Art

[0002] In order to increase the effective aquaculture water body, most of the existing marine fish farming cages are below the water surface, so that the bottom of the marine fish farming cages is far away from the water surface (i.e., the draft is large). Due to the limitation of the waterway depth, the towing of the marine fish farming cages after construction, the capture of marine fish after cultivation, and the docking and maintenance of the marine fish farming cages in the later stage of use are all faced with difficulties. At the same time, marine organisms grow vigorously in summer, and fishing nets immersed in seawater are very likely to grow marine organisms. Traditional aquaculture cages face the problems of frequent replacement of fishing nets and failure to detect damaged fishing nets in time. Summary of the invention

[0003] In view of the above-mentioned defects existing in the prior art, the purpose of the present invention is to provide a liftable and rotatable marine fish farming cage and a method for using the same, so that the cage has the functions of being liftable and rotatable. The liftable function of the cage can reduce the draft of the cage, solve the problems of cage towing, docking for maintenance and catching adult fish; the cage rotation function can realize the removal of marine organisms by drying the nets, solve the problem of frequent replacement of fishing nets due to the attachment of marine organisms, and facilitate the inspection of damaged fishing nets.

[0004] To achieve the above object, the present invention adopts the following technical solution:

[0005] On the one hand, a hoistable and rotatable marine fish farming cage comprises a structural float, a farming cage body, a lifting mechanism and a rotating mechanism;

[0006] The structural float floats on the water surface, a hanger is provided on the structural float, the lifting mechanism is provided on the hanger, the lifting mechanism is connected to the aquaculture cage body, and the aquaculture cage body is lifted / lowered relative to the structural float through the lifting mechanism;

[0007] The surface of the aquaculture cage body is covered with a fishing net;

[0008] The rotating mechanism is arranged on the structural floating body and is connected with the aquaculture net cage body, so that the aquaculture net cage body can rotate and dry the net when the aquaculture net cage body is in a descending state.

[0009] Preferably, the structural floating body is arranged in a ring shape.

[0010] Preferably, the aquaculture cage body is arranged in the ring of the structural float.

[0011] Preferably, the hangers are in pair and are respectively arranged at two ends of the long axis of the structural float, and the hangers are both provided with lifting mechanisms.

[0012] Preferably, the lifting mechanisms include a winch, a plurality of pulley blocks and a steel wire rope;

[0013] Preferably, the winch is arranged on the hanger, and multiple pulley blocks are arranged on the hanger and at the end of the breeding cage body. One end of the wire rope is wound around the winch, and the other end of the wire rope passes through the pulley block on the hanger and the pulley block on the breeding cage body and is then connected to the top of the hanger.

[0014] Preferably, the breeding cage body is in the shape of a waist drum, cylinder, prism or sphere, and is made of steel or other equivalent materials.

[0015] Preferably, the rotating mechanism includes a rotor structure provided on the lower surface of both ends of the structural floating body in the long axis direction, a cage slewing support provided on both ends of the aquaculture cage body and adapted to the rotor structure, and a plurality of cage rotating winches provided on the structural floating body and located on both sides of the structural floating body in the long axis direction;

[0016] A cage rotating wire rope is wound around each cage rotating winch, one end of the cage rotating wire rope is wound around the cage rotating winch, and the other end of the cage rotating wire rope is wound around a fixed pulley and then connected to the end of the breeding cage body.

[0017] Preferably, the rotor structure includes a detachable base disposed on the lower surfaces of both ends of the structural float in the long axial direction, and a rotor disposed on the detachable base and evenly distributed around the center position of the detachable base.

[0018] On the other hand, a method for using a liftable and rotatable marine fish farming cage, the marine fish farming cage comprising a structural float, a farming cage body, a lifting mechanism and a rotating mechanism;

[0019] The structural float floats on the water surface to provide buoyancy / support for the aquaculture cage body when it rises / falls. A hanger is provided on the structural float, and the lifting mechanism is provided on the hanger. The lifting mechanism is connected to the aquaculture cage body, and the aquaculture cage body can achieve rising / falling movement relative to the structural float through the lifting mechanism.

[0020] The surface of the aquaculture cage body is covered with a fishing net;

[0021] The rotating mechanism is arranged on the structural floating body and connected to the aquaculture net cage body, so that the aquaculture net cage body can rotate and dry the net when the aquaculture net cage body is in a descending state;

[0022] The method of use includes:

[0023] When the lifting mechanism releases the aquaculture cage body, a portion of the aquaculture cage body greater than 1 / 2 of the entire body is lowered and immersed in water, and is in a breeding state. At this time, the structural float provides buoyancy for the aquaculture cage body;

[0024] The fishing net on the part of the aquaculture cage body that is not immersed in water is dried and inspected, and the aquaculture cage body is driven by the rotating mechanism to rotate clockwise or counterclockwise to achieve the overall drying of the fishing net on the aquaculture cage body;

[0025] When the lifting mechanism tightens the aquaculture cage body, the aquaculture cage body is raised in whole or in part and located on the water surface, and is in a lifted state. At this time, the structural float provides support for the aquaculture cage body.

[0026] The structural float is arranged in a ring shape, the aquaculture cage body is arranged in the ring of the structural float, and the hanger has a pair, which are respectively arranged at the two ends of the long axis of the structural float, and the hangers are provided with lifting mechanisms.

[0027] The lifting mechanisms all include a winch, a plurality of pulley blocks and a steel wire rope;

[0028] The winch is arranged on the hanger, a plurality of pulley blocks are arranged on the hanger, one end of the steel wire rope is wound on the winch, and the other end of the steel wire rope passes through the pulley block on the hanger and the pulley block on the aquaculture cage body and then is connected to the top of the hanger;

[0029] The winch releases the steel wire rope to achieve the descent of the aquaculture cage body;

[0030] The winch tightens the steel wire rope to achieve the lifting of the breeding cage body.

[0031] Preferably, the aquaculture cage body is in the shape of a waist drum, a cylinder, a prism or a sphere, and is made of steel, and the surface of the aquaculture cage body is covered with a fishing net.

[0032] Preferably, the rotating mechanism includes a rotor structure provided on the lower surface of both ends of the structural floating body in the long axis direction, a cage slewing support provided on both ends of the aquaculture cage body and adapted to the rotor structure, and a plurality of cage rotating winches provided on the structural floating body and located on both sides of the structural floating body in the long axis direction;

[0033] Each of the cage rotating winches is wound with a cage rotating wire rope, one end of the cage rotating wire rope is wound around the cage rotating winch, and the other end of the cage rotating wire rope is wound around a fixed pulley and then connected to the end of the breeding cage body;

[0034] The cage rotating winch on the same side simultaneously tightens the cage rotating wire rope to make the breeding cage body rotate toward that side.

[0035] In the above technical scheme, the present invention provides a kind of marine fish breeding cage that can be lifted and rotated and its use method. By lowering the breeding cage body through the lifting mechanism, the part of the breeding cage body that is larger than 1 / 2 of the whole body can be immersed in the water, thereby increasing the effective breeding water body. The breeding cage body that is exposed to the water surface can be used for drying nets. The structural float provides buoyancy for the breeding cage body to prevent the breeding cage body from sinking directly to the bottom of the water. The breeding cage body is lifted by the lifting mechanism to achieve the rise of the breeding cage body, thereby reducing the draft of the breeding cage as a whole. The structural float provides support for the breeding cage body, so that the breeding cage body is lifted as a whole or partially and located on the water surface, which is convenient for the towing and docking maintenance of the breeding cage body, and reduces the volume of the breeding water body. The adult fish are concentrated at the bottom of the cage, which is convenient for capture. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a front view of an embodiment of a marine fish farming cage of the present invention in a raised state;

[0037] Figure 2 yes Figure 1 A side view of an embodiment of a fish farming cage in the middle sea in a raised state;

[0038] Figure 3 yes Figure 1 A top view of the embodiment of the Zhonghai fish farming cage in a raised state;

[0039] Figure 4 This is a front view of an embodiment of a marine fish farming net cage of the present invention in a farming state;

[0040] Figure 5 yes Figure 4 A side view of the embodiment of the Zhonghai fish farming cage in the farming state;

[0041] Figure 6 yes Figure 4 A top view of the embodiment of the Zhonghai fish farming cage in the farming state;

[0042] Figure 7 Schematic diagram of a marine fish farming cage embodiment of the present invention in which the main body of the farming cage is in the shape of a waist drum;

[0043] Figure 8It is a schematic diagram of a marine fish farming cage embodiment of the present invention in which the farming cage body is spherical;

[0044] Fig. 9 yes Figure 5 A magnified schematic diagram of part A;

[0045] Fig.10 yes Figure 2 Schematic diagram of the enlarged portion B. DETAILED DESCRIPTION

[0046] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0047] Please combine Figures 1 to 6 As shown, a liftable and rotatable marine fish farming cage provided by the present invention comprises a structural float 1, a farming cage body 2, a lifting mechanism and a rotating mechanism.

[0048] The structural float 1 floats on the water surface, providing buoyancy for the entire cage. It is made of steel or other equivalent materials, has sufficient strength to ensure that it is not damaged in wind and waves, and provides support for the aquaculture cage body 2 it carries.

[0049] The structural floating body 1 of the present embodiment is arranged in an elliptical ring shape, and the two ends of the long axis thereof are arranged in straight line segments.

[0050] A hanger 3 is provided on each straight section of the structural float 1, and a lifting mechanism is installed on the hanger 3. The hanger 3 provides support for the lifting mechanism and has sufficient strength. The lifting mechanism is connected to the aquaculture cage body 2, and the aquaculture cage body 2 is used to realize rising and / or descending movement relative to the structural float 1 through the lifting mechanism.

[0051] The breeding cage body 2 is set as a frame structure, and the shape can be selected from a waist drum shape (such as Figure 7 As shown), cylindrical, prismatic, spherical (as shown Figure 8 The aquaculture cage body 2 of this embodiment is in the shape of a waist drum and is arranged in the ring of the structural buoy 1, matching the shape of the structural buoy 1. The aquaculture cage body 2 is made of steel or other equivalent materials.

[0052] The surface of the breeding cage body 2 is covered with a fishing net, which wraps the entire breeding cage body 2 to form a closed breeding space therein, which is the fish activity area.

[0053] There is a pair of hangers 3 , which are respectively installed on the straight sections of the structural floating body 1 , and a lifting mechanism is installed on each of the hangers 3 .

[0054] The lifting mechanisms each include a winch 4 , a plurality of pulley blocks 5 and a steel wire rope 6 .

[0055] The winch 4 is installed on the hanger 3, and multiple pulley blocks 5 are respectively installed on the hanger 3 and the ends of the aquaculture cage body 2. One end of the wire rope 6 is wound around the winch 4, and the other end of the wire rope 6 passes through the pulley block 5 on the hanger 3 and the pulley block 5 on the aquaculture cage body 2 and then connected to the top of the hanger 3.

[0056] The rotating mechanism includes a rotor structure 7 installed on the lower surface of the two end portions of the structural float 1 in the long axis direction, a cage rotary support 8 installed on the two end portions of the aquaculture cage body 2 and adapted to the rotor structure 7, and a plurality of cage rotating winches 9 installed on the structural float 1 and located on both sides of the long axis direction of the structural float 1.

[0057] Each cage rotating winch 9 is wound with a cage rotating wire rope 10, one end of the cage rotating wire rope 10 is wound around the cage rotating winch 9, and the other end of the cage rotating wire rope 10 is wound around a fixed pulley 11 installed on the structural float 1 and then connected to the end position of the aquaculture cage body 2.

[0058] Please combine Fig. 9 As shown, the rotor structure 7 includes a detachable base 701 installed on the lower surface of the two ends of the structural floating body 1 in the long axis direction, and six rotors 702 installed on the detachable base 701 and evenly distributed around the center position of the detachable base 701. The top of the detachable base 701 can be removed as a piece, and the two rotors 702 at the top are removed to form an installation opening 703 (such as Fig.10 As shown), it is convenient for the installation and positioning of the mesh box rotary support 8.

[0059] When the winch 4 releases the steel wire rope 6, the length of the steel wire rope 6 is increased to achieve the descent of the aquaculture cage body 2, so that the aquaculture cage body 2 is immersed in water and is in a breeding state. At this time, the fishing net on the part of the aquaculture cage body 2 that is not immersed in water can be dried and inspected, which solves the problem of marine organisms attached to the fishing net and avoids frequent replacement of the fishing net. At the same time, it is convenient to check the damage of the fishing net, discover and repair the fishing net as early as possible, and reduce the loss caused by the escape of marine fish. The aquaculture cage body 2 is then driven by the rotating mechanism to rotate clockwise or counterclockwise, and the fishing net is dried in different areas, finally realizing the overall drying of the fishing net on the aquaculture cage body 2.

[0060] When the winch 4 tightens the steel wire rope 6, the length of the steel wire rope 6 is shortened to realize the rising of the aquaculture cage body 2, so that the aquaculture cage body 2 is located on the water surface and is in a lifted state.

[0061] The present invention also provides a method for using a liftable and rotatable marine fish farming cage, wherein the marine fish farming cage comprises a structural float 1, a farming cage body 2, a lifting mechanism and a rotating mechanism.

[0062] The structural float 1 floats on the water surface, providing corresponding buoyancy and / or support for the rising and / or descending movement of the aquaculture cage body 2. The structural float 1 is arranged in an elliptical ring shape, and the two ends of its long axis are arranged in straight sections, and hangers 3 are installed on the straight sections. The lifting mechanism is installed on the hanger 3, and the hanger 3 provides support for the lifting mechanism and has sufficient strength. The lifting mechanism is connected to the end of the aquaculture cage body 2, and the aquaculture cage body 2 realizes the rising and / or descending movement relative to the structural float 1 through the lifting mechanism.

[0063] The surface of the breeding cage body 2 is covered with a fishing net, which wraps the entire breeding cage body 2 to form a closed breeding space therein, which is the fish activity area.

[0064] The rotating mechanism is installed on the structural float 1 and is also connected to the aquaculture cage body 2, so that the aquaculture cage body 2 can also realize the rotating net drying function of the aquaculture cage body 2 when it is in a descending state.

[0065] The method of using the present invention includes:

[0066] When the lifting mechanism releases the aquaculture cage body 2, most of the aquaculture cage body 2 (a portion greater than 1 / 2 of the whole) is lowered and immersed in the water, and is in a breeding state. At this time, the structural float 1 provides buoyancy for the aquaculture cage body 2;

[0067] The fishing nets on the part of the aquaculture cage body 2 that is not immersed in water can be dried and inspected, and the aquaculture cage body 2 can be driven by the rotating mechanism to rotate clockwise or counterclockwise to dry the fishing nets in different areas, ultimately achieving the overall drying of the fishing nets on the aquaculture cage body 2.

[0068] In the breeding state, the slewing support device 8 supports the breeding net cage body 2, and the breeding net cage rotating wire rope 10 is driven by the net cage rotating winch 9, and the breeding net cage body 2 can rotate around the slewing support device 8 in the clockwise or counterclockwise direction. The breeding net cage body 2 covers the fishing net to form a closed breeding space. The part of the breeding net cage body 2 immersed in the water is the fish activity area, and the upper part exposed to the water surface is used to remove the attached marine organisms through the processes of sun exposure, air drying, etc. The breeding net cage body 2 rotates to regularly rotate the underwater part of the fishing net out of the water to achieve self-cleaning of the entire fishing net. At the same time, rotating the breeding net cage body 2 can facilitate the inspection of the damaged fishing net, facilitate early detection and repair of the fishing net, and reduce the economic losses caused by the escape of marine fish due to the damage of the fishing net.

[0069] When the lifting mechanism tightens the aquaculture cage body 2 , the aquaculture cage body 2 is raised in whole or in part and is located on the water surface, and is in a lifted state. At this time, the structural float 1 provides support for the aquaculture cage body 2 .

[0070] In the lifting state, the aquaculture cage body 2 is lifted by the winch 4, the pulley block 5 and the wire rope 6, so that the part immersed in the water gradually becomes smaller, so as to reduce the overall draft of the aquaculture cage. The reduced draft can solve the problems of launching and towing the aquaculture cage after the overall construction is completed, and the maintenance of the aquaculture cage in the later stage of use; at the same time, after the aquaculture cage body 2 is lifted, the enclosed space formed by the fishing net immersed in the water becomes smaller, and the marine fish are concentrated in a smaller water body, which is convenient for fishing, and then solves the problem of catching adult fish.

[0071] The aquaculture cage body 2 is set as a frame structure, and the shape is waist drum, cylinder, prism, sphere or other geometric shapes. In this embodiment, the aquaculture cage body 2 is waist drum-shaped and is arranged in the ring of the structural float 1. It is adapted to the shape of the structural float 1, so that the aquaculture cage body 2 can rise and / or fall in the ring of the structural float 1. The aquaculture cage body 2 is made of steel or other equivalent materials.

[0072] The surface of the breeding cage body 2 is covered with a fishing net, which wraps the entire breeding cage body 2 to form a closed breeding space therein, which is the fish activity area.

[0073] The lifting mechanisms each include a winch 4 , a plurality of pulley blocks 5 and a steel wire rope 6 .

[0074] The winch 4 is installed on the hanger 3, and multiple pulley blocks 5 are respectively installed on the hanger 3 and the ends of the aquaculture cage body 2. One end of the wire rope 6 is wound around the winch 4, and the other end of the wire rope 6 passes through the pulley block 5 on the hanger 3 and the pulley block 5 on the aquaculture cage body 2 and then connected to the top of the hanger 3.

[0075] When the winch 4 releases the steel wire rope 6, the length of the steel wire rope 6 is increased to achieve the descent of the aquaculture cage body 2, so that the aquaculture cage body 2 is immersed in water and is in a breeding state.

[0076] When the winch 4 tightens the wire rope 6, the length of the wire rope 6 is shortened to realize the rise of the aquaculture cage body 2, so that the aquaculture cage body 2 is located on the water surface in a lifted state, thereby reducing the overall draft of the aquaculture cage of the present invention. The structural float provides support for the aquaculture cage body, so that the aquaculture cage body is located on the water surface, which is convenient for towing, docking maintenance and adult fish capture of the aquaculture cage body.

[0077] When the aquaculture cage body 2 is in the aquaculture state, the cage rotating wire rope 10 of the rotating mechanism is in the installed state, the six rotors 702 of the rotor mechanism 7 are in the complete state, the wire rope 6 of the lifting mechanism is in the disassembled state, and the cage rotating winch 9 drives the cage rotating wire rope 10 to drive the aquaculture cage body 2 to rotate.

[0078] When the aquaculture cage body 2 needs to be towed, docked for maintenance or fishing, the aquaculture cage body 2 needs to be lifted. Before lifting, the cage rotating wire rope 10 must be removed first, and the top two rotors of the rotor structure 7 must be removed at the same time, and then the wire rope 6 of the lifting mechanism is installed, and the lifting and lowering of the aquaculture cage body 2 is achieved through the drive of the winch 4 of the lifting mechanism.

[0079] When it is necessary to convert the aquaculture cage body 2 to the aquaculture state again, the lifting mechanism first lowers the aquaculture cage body 2 to place the slewing support device 8 into the rotor mechanism 7, installs the two uppermost rotors 702 of the rotor mechanism 7, removes the wire rope 6 of the lifting mechanism, and then installs the cage rotating wire rope 10 of the rotating mechanism to realize the rotation of the aquaculture cage body 2, and so on, to realize the switching operation of the aquaculture cage body 2 that can be lifted and rotated.

[0080] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A hoistable and rotatable marine fish farming cage, characterized in that: It includes a structural float, a breeding cage body, a lifting mechanism and a rotating mechanism; The structural float floats on the water surface, a hanger is provided on the structural float, the lifting mechanism is provided on the hanger, the lifting mechanism is connected to the aquaculture cage body, and the aquaculture cage body is lifted / lowered relative to the structural float through the lifting mechanism; The surface of the aquaculture cage body is covered with a fishing net; The rotating mechanism is arranged on the structural float and connected to the aquaculture cage body, so that the aquaculture cage body can rotate and dry the net when the aquaculture cage body is in a descending state. The breeding cage body is in the shape of a waist drum, a cylinder, a prism or a sphere, and is made of steel. The hangers have a pair, which are respectively arranged at the two ends of the long axis of the structural floating body, and the hangers are both provided with a lifting mechanism. The lifting mechanisms all include a winch, a plurality of pulley blocks and a steel wire rope; The winch is arranged on the hanger, and a plurality of pulley blocks are arranged on the hanger and at the end of the aquaculture cage body. One end of the steel wire rope is wound on the winch, and the other end of the steel wire rope passes through the pulley block on the hanger and the pulley block on the aquaculture cage body and is connected to the top of the hanger; The rotating mechanism comprises a rotor structure provided on the lower surface of both ends of the structural floating body in the long axis direction, a cage slewing support provided on both ends of the aquaculture cage body and adapted to the rotor structure, and a plurality of cage rotating winches provided on the structural floating body and located on both sides of the structural floating body in the long axis direction; Each of the cage rotating winches is wound with a cage rotating wire rope, one end of the cage rotating wire rope is wound around the cage rotating winch, and the other end of the cage rotating wire rope is wound around a fixed pulley and then connected to the end of the breeding cage body; The rotor structure comprises a detachable base arranged on the lower surfaces of the two ends of the structural float in the long axial direction, and a rotor arranged on the detachable base and evenly distributed around the center position of the detachable base.

2. The hoistable and rotatable marine fish farming cage according to claim 1, characterized in that: The structural floating body is arranged in a ring shape.

3. The hoistable and rotatable marine fish farming cage according to claim 2, characterized in that: The breeding net cage body is arranged in the ring of the structural float.

4. A method for using a lifting and rotatable marine fish farming cage, characterized in that: The marine fish farming cage comprises a structural float, a farming cage body, a lifting mechanism and a rotating mechanism; The structural float floats on the water surface to provide buoyancy / support for the aquaculture cage body when it rises / falls. A hanger is provided on the structural float, and the lifting mechanism is provided on the hanger. The lifting mechanism is connected to the aquaculture cage body, and the aquaculture cage body can achieve rising / falling movement relative to the structural float through the lifting mechanism. The surface of the aquaculture cage body is covered with a fishing net; The rotating mechanism is arranged on the structural floating body and connected to the aquaculture net cage body, so that the aquaculture net cage body can rotate and dry the net when the aquaculture net cage body is in a descending state; The method of use includes: When the lifting mechanism releases the aquaculture cage body, a portion of the aquaculture cage body greater than 1 / 2 of the entire body is lowered and immersed in water, and is in a breeding state. At this time, the structural float provides buoyancy for the aquaculture cage body; The fishing net on the part of the aquaculture cage body that is not immersed in water is dried and inspected, and the aquaculture cage body is driven by the rotating mechanism to rotate clockwise or counterclockwise to achieve the overall drying of the fishing net on the aquaculture cage body; When the lifting mechanism tightens the aquaculture cage body, the aquaculture cage body is lifted as a whole or partially and located on the water surface, and is in a lifted state. At this time, the structural float provides support for the aquaculture cage body. The structural floating body is arranged in a ring shape, the aquaculture cage body is arranged in the ring of the structural floating body, the hanging bracket has a pair, which are arranged at the two ends of the long axis of the structural floating body, and the hanging brackets are provided with lifting mechanisms. The lifting mechanisms all include a winch, a plurality of pulley blocks and a steel wire rope; The winch is arranged on the hanger, a plurality of pulley blocks are arranged on the hanger, one end of the steel wire rope is wound on the winch, and the other end of the steel wire rope passes through the pulley block on the hanger and the pulley block on the aquaculture cage body and then is connected to the top of the hanger; The winch releases the steel wire rope to achieve the descent of the aquaculture cage body; The winch tightens the steel wire rope to achieve the lifting of the breeding cage body. The aquaculture cage body is in the shape of a waist drum, a cylinder, a prism or a sphere, and is made of steel. The surface of the aquaculture cage body is covered with a fishing net. The rotating mechanism comprises a rotor structure provided on the lower surface of both ends of the structural floating body in the long axis direction, a cage slewing support provided on both ends of the aquaculture cage body and adapted to the rotor structure, and a plurality of cage rotating winches provided on the structural floating body and located on both sides of the structural floating body in the long axis direction; Each of the cage rotating winches is wound with a cage rotating wire rope, one end of the cage rotating wire rope is wound around the cage rotating winch, and the other end of the cage rotating wire rope is wound around a fixed pulley and then connected to the end of the breeding cage body; The cage rotating winch on the same side simultaneously tightens the cage rotating wire rope to make the breeding cage body rotate toward that side.

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